错误信息：dataHierarchy(): Argument #2 ($parentId) must be of type int, null given, called in /home/xinyi2/xinyi2.sz2.hostadm.net2/public_html/app/home/controller/ProductController.php on line 57 文件：/home/xinyi2/xinyi2.sz2.hostadm.net2/public_html/app/common/helper/Function.php 行数：341行